en.Wedoany.com Reported - Germany's Fraunhofer Institute for Solar Energy Systems (Fraunhofer ISE) has increased the efficiency of photovoltaic modules based on III-V germanium substrate solar cells to 34.4%. This new record is achieved by combining the shingle matrix interconnection technology with photovoltaic cells originally developed for space applications.

The module will be showcased at the Intersolar Europe exhibition in Munich. The previous record of 34.2% was achieved in early 2026 as part of the Vorfahrt research project, also using cells supplied by Azur Space. For the new generation, the manufacturer has adapted its triple-junction solar cell technology to match the terrestrial solar spectrum. Additionally, the anti-reflective structure on the front glass was developed by Temicon.

The key to the new record lies in the adoption of the shingle matrix technology, developed by Fraunhofer ISE in collaboration with a mechanical engineering partner and already applied in some commercial modules. This design replaces the architecture of conventional photovoltaic modules: cells are cut into narrow strips, partially overlapping like roof tiles, and connected using electrically conductive adhesive (ECA). This configuration eliminates the need for soldered copper ribbons for cell interconnection, reduces shading losses on the active surface, and improves the utilization of available area, resulting in higher power density and overall module efficiency gains.

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